[5] Competing for the school's football team, Dunn played offensive tackle and guard.
[6] Dunn married The Athletic podcast producer Marissa Morris, whom he started dating in 2016, in February 2022.
[7] After going undrafted in the 2017 NFL draft, Dunn had a rookie minicamp tryout with the Los Angeles Rams in May 2017.
[11] He was waived during final roster cuts on September 2, 2017,[12] and signed to the Rams' practice squad the following day.
[21] Dunn signed with the Birmingham Iron of the Alliance of American Football (AAF) on January 15, 2019.
[22] After the AAF suspended league operations eight weeks into its season, Dunn was signed by the Miami Dolphins on April 9, 2019.
[27] He was waived during final roster cuts on September 5, 2020,[28] and signed to their practice squad the next day.
[34] Dunn's first career start came on January 10, 2021, in the Browns' 48-37 playoff victory against the Pittsburgh Steelers.
[35] Dunn started after left guard Joel Bitonio tested positive for COVID-19.